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  2. Molisch's test - Wikipedia

    en.wikipedia.org/wiki/Molisch's_test

    Molisch test (using α-napthol) indicating a positive result (see purple ring). Molisch's test is a sensitive chemical test, named after Austrian botanist Hans Molisch, for the presence of carbohydrates, based on the dehydration of the carbohydrate by sulfuric acid or hydrochloric acid to produce an aldehyde, which condenses with two molecules of a phenol (usually α-naphthol, though other ...

  3. Iodine–starch test - Wikipedia

    en.wikipedia.org/wiki/Iodine–starch_test

    The iodine–starch test is a chemical reaction that is used to test for the presence of starch or for iodine. The combination of starch and iodine is intensely blue-black. [1] [2] The interaction between starch and the triiodide anion (I − 3) is the basis for iodometry.

  4. Benedict's reagent - Wikipedia

    en.wikipedia.org/wiki/Benedict's_reagent

    Generally, Benedict's test detects the presence of aldehyde groups, alpha-hydroxy-ketones, and hemiacetals, including those that occur in certain ketoses. In example, although the ketose fructose is not strictly a reducing sugar, it is an alpha-hydroxy-ketone which results to a positive test because the base component of Benedict converts it ...

  5. Osazone - Wikipedia

    en.wikipedia.org/wiki/Osazone

    Osazone formation was developed by Emil Fischer, [3] who used the reaction as a test to identify monosaccharides. The formation of a pair of hydrazone functionalities involves both oxidation and condensation reactions. [4] Since the reaction requires a free carbonyl group, only "reducing sugars" participate.

  6. Aniline acetate test - Wikipedia

    en.wikipedia.org/wiki/Aniline_acetate_test

    The aniline acetate test is a chemical test for the presence of certain carbohydrates, in which they are converted to furfural with hydrochloric acid, which reacts with aniline acetate to produce a bright pink color. Pentoses give a strong reaction, and hexoses give a much weaker reaction.

  7. Rapid furfural test - Wikipedia

    en.wikipedia.org/wiki/Rapid_furfural_test

    The rapid furfural test is a chemical test used to distinguish between glucose and fructose. The rapid furfural test is similar to Molisch's test but uses concentrated hydrochloric acid instead of concentrated sulfuric acid and the solution is boiled. [1] Dilute sugar solution is added to ethanolic 1-naphthol and concentrated hydrochloric acid ...

  8. Carbohydrate deficient transferrin - Wikipedia

    en.wikipedia.org/wiki/Carbohydrate_deficient...

    Used with other tests, such as gamma glutamyl transferase (GGT), aspartate aminotransferase (AST), and alanine aminotransferase (ALT), carbohydrate-deficient transferrin can be a useful tool in identifying problem drinking, such as alcohol use disorder.

  9. Nutrition analysis - Wikipedia

    en.wikipedia.org/wiki/Nutrition_analysis

    In the United States, nutrition information is required on packaged retail foods in the form of nutrition facts panels as a result of food labeling regulations. [1] In recent years, many restaurants have begun posting nutrition information as a result of both customer demand and menu-labeling laws.